Abstract: An exemplary light guide plate (500) includes: a light incident portion (51) for receiving a light; a light reflecting portion (52) for reflecting the light input through the light incident portion; and a light emitting portion (53) opposite to the light reflecting portion, for outputting the reflected light. The light incident portion includes a first diffractive optical element (512) located thereat. The first diffractive optical element includes a plurality of protrusions (512a) each having a curved surface, with the protrusions being arranged symmetrically opposite to each other across a central axis of symmetry of the first diffractive optical element. The light emitting portion may include a second diffractive optical element (532) located thereat. The second diffractive optical element includes a plurality of elongate protrusions, with the protrusions being arranged symmetrically opposite to each other across a central axis of symmetry of the second diffractive optical element.

Abstract: The present invention disclosed a shipping container comprising a pair of side walls, a rear end, a front end, a roof, a floor and a base frame; said base frame further comprising two longitudinal bottom side rails and numbers of parallel bottom cross members, wherein said floor is made up of corrugated steel floor. On the premise of passing ISO test, it provides a container which is lighter in tare weight, less in material consumed and lower in production cost.

Abstract: The present invention relates to a shipping container. By making improvements on its structure: to add longitudinal members in the base frame, and/or to increase the wave height D between the wave crest and wave trough of the corrugated plate of the side panels, and/or to adopt steel plate in the floor, on the premise of passing ISO test, it provides a container which is lighter in tare weight, less in material consumed and lower in production cost.